Zac Efron stars in Web video for FunnyOrDie.com

Associated PressIn a new comedic Web video, "High School Musical" actor Zac Efron hosts a star-studded pool party that dissolves quickly when his rude uncle arrives.

In a new comedic Web video, Zac Efron hosts a star-studded pool party that dissolves quickly when his rude uncle arrives.

The "High School Musical" heartthrob did the video for FunnyOrDie.com, the comedy video Web site co-founded by Will Ferrell and Adam McKay. It features cameos of seemingly half of young Hollywood and a few veterans, too.